Paper-folding machine.



R HHCHCOCK.

PAPER FOLDING MACHINE.

l APPLICATION FILED UGI 1915. I PSSF Paente Nov. 26, 1918.

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f l??? 5, Rene@ ,C-5am@ i UNITED STATES PATENT OFFICE.

REUBEN HITCHCOCK, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND FOLDING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION 0F OHIO.

.PAPER-FOLDING MACHINE Application led August 5, 1915.

To all 'Lo/wmy t mag/Concern Be it known that I, RnUenN Hrrcncocii, a citizen of the United States of America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful' Improvements in Paper- Folding Machines, of which the following is a specification. Y

paper folding machines. and more particularly to certain features pertainingN to the buckling or side plates of said folding' inachiues, whereby accuracy in forming the folds is insured. j

As will be recognized, folding machines must' operate successfully with widely different classes of paper stock, upon folds of various classes and descriptions, and such folds as are to be made along predetermined scored or slit signatures. It is with the latter classI 4of folds that the most ditticulty is encountered in practice, for the reason that the folds must be formed with absolute accuracy. while the slit, or scored paper presents ditliculties in folding. unless the folding machine operates with the greatest possible zwcuracy, and at the lines of scoring.

The present improvements were devised, in order to overcon'ie the difiiculties above referred to, and are embodied in a buckling or side plate of the folding machine associated with buckling and creasing rolls, wherein one member of said side plate is made adjustable with respect to said rolls, and is provided with laterally acting supporting springs which are adjustable. both with respect to their position and tension exerted upon the signature within the side plate. My improvements may be more readily explained in connection with the accompanying drawings. wherein.l

Figure 'i is a fragmentary View part-ly in side mentation. of a foldingr machine. showing the buckling plat-e centrally broken away, together with the co-actingrolls, equipped .with my improvements.

Fig. 2 is an enlarged fragment in transverse section. illustrating the adjustable spring within the buckling plate.

Fig. 3 is a fragmentary view partially in diagram and cross-section, illustrating the folding operation with the outer grido!" the sidejplate 1n its forwardly `.uljusted position.

Specification of Letters Patent.

Mv invention relates to improvements in Patented Nov. 26, 1918.

Serial No. 43,721.

tially diagrammatic view illustrating the foldin operations with the outer grid of the side pate in its rearwardly adjusted position.

Fig. :3 is a similar View partially in section, illustrating the relation of the several co-acting members and spring with respect to the side plate. Further details thereof are shown in application Ser. No. 846,465.

Fig. G is a fragment of the outer grid with its slot for a tl'ording longitudinal adjustment thereof, and Fig. 7 is an enlarged view of the screw-adjusted spring.

Throughout the several figures of the drawings, I have employed the same character of reference to indicate similar parts.

In said drawings, the folding machine is merely suggested in the principal. View. for illustratingvr the relation of the side buckling plate. set at an angle with said folding niachine, wherein the buckling rolls direct each signature in turn, for the purpose of forniing a right-angle fold. Further illustration and explanation of the features of such folding machine are unnecessary for ari-understanding of my present invention. Moreover. roll (l, Fig. 1. is omitted for clear-ness.

In Fig. 1, the frame a of the folding machine is provided with three vertically positioued buckling and creasingV rolls c, il, which are designed to pass each signature into the side buckling plate. c. set at an angle of 45') with the side frames of the foldingmachine, and thereafter forni a transverse or right-angle fold in the signature. The side plate c comprises a stationary grid c and the adjustable spaced grid e;-the latter being made adjustable with respect to the rolls and grid c by means of slots f', Which accommodate the. adjusting bolts It', positioncd adjacentto the corners or edges of said grid.

The top and bottom edges of the side plate are marked with corresponding scales, by which to engage the position of the adjustable stop g, which is secured by thumb nuts y and an outer strip g, adapted to be clamped in place by said thumb nuts.

Beneath this strip g I preferably insert one or more laterally acting spring members 71., of the type best shown in Figs. 2 and 7.;

within said neem/oe I claim as new secure by Letters Patent, the

embodiment of my invention, and desire to :iol lowing zl. ln a folding machine, the combination with abuclding plate comprising spaced grids and its izo-acting folding and buckling rolls, or a paper stop Within said buckling piste, abowed spring positioned between two opposing grid-openings to bearl against the folded sheet While 'traveling' in said buckling plate, and screw-acting means for adjusting the n'pressure of said spring upon the folded sheet, substantially as set forth.

lfn a folding machine, the combination with its right angle folding mechanism comprising. folding and buckling rolls, a buckling plate comprising spaced grids vertically positioned adjacent thereto, a paper stop therein, an adjustable spring extending buckling plate between two opposing grid-openings in` the path of the paper', and screw-acting meansfor adjusting the pressure to be exerted by said spring, substantially as set forth. Y

In a folding machine,

the combination Wi tl) co-actlng buckling and folding' rolls, of a vertically positioned buckling plate associated therewith, comprising opposing grids spaced apart to permit the passage of the paper, anadjustable spring extending through registermg opengrids, adapted to engage and deflect the sheets when traveling between said grids, and screw-acting means .for adjusting the pressure to be exerted by said spring, substantially as set forth.

In a folding machine, the combination with co-acting buckling and creasing rolls, of a buckling plate associated withsaid rolls, and adjustable means for shielding iortions of a creasin roll to vary its initial tractive effect upon t e si nature within the buckling plate, substantially `as set forth.

5. In a fo ding machine, the combination with cri-acting folding and buckling rolls, oit a buckling plate associated l therewith, comprising spaced members and means for adjusting one of said members with respect to the rolls for shielding variable portions of the periphery of a roll, substantially as set forth.

6. In a folding machine, the combination with (eo-acting folding and buckling rolls, buckling plate associated therewith, comprising two'mernbers spaced apartA to permit the passage of the folded sheet, a paper stop therein, and means for effecting the adjustment of one of said members with respect to the rolls for shielding variable portions of the periphery of a roll, substantially as set forth.

In a folding machine the combination with a set of folding and uckling rolls, of a buckling plate associated therewith, comprising two relatively adjustable spaced grids, and'means for adjusting one of said grids to cover more or less of the periphery of one of the folding rolls, substantially as set forth. l 8. fn a folding machine, lthe combination with; set oi" folding and buckling rolls, of a buc ling plate associated therewith, comprising two spaced grids, one of which is stationary andthe other adjustable with re-A 1 spect to said rolls; the stationary grid being provided with an abutment adapted to be engaged by the folded sheet and means for adjusting the adjustable grid to expose more or less ofthe periphery of one of said folding rolls, substantially as set forth.

In paper-folding mechanism', the combination with coactingj'olding and buckling rolls, .of an associated buckling plate, comprising two spaced members between which the buckling is initiated, and means for ef- :footing the adjustment of one of said members with respect to a roll whereby alternatively to shield or expose variable portions tiiereof, substantialiy as set forth.

In testimony whereof I hereunto alix my signature inthe. presence of two witnesses.

Wir. B. Woo: .i LBERT LYNN LAWRENCE. 

